Lecture 12 B: Aqueous Humor Drainage Flashcards
IOP maintains what?
eye shape and function
normal IOP
15 mmHg
hypertension
> 21 mmHg
elevated IOP is an elevated risk for what
glaucoma
Glaucoma: what causes nerve damage
high pressure in the eye
4 steps in aqueous humor drainage
- Secreted by Ciliary Body (Q = 2.5 uL/min)
- Flows through Pupil
- Flows through Outflow Pathway
- Enters veins on the surface of the eye
what type of spaces does TM have and how many microns thick is it
interlamellar spaces: large 25 to 75 microns side-to-side
scanning electron micrograph demonstrates what?
the appearance of the uveal face of the TM as viewed from the anterior chamber
the inner wall of endothelial cells of schlemm’s canal has two unique aspects - what are they
- giant vacuoles
2. pores
aqueous humor is produced by what and secreted where?
ciliary process of the ciliary body and is secreted in the posterior chamber
how will some of the fluid move posteriorly?
vitreous cavity
how does the majority of the aqueous humor flow
through the pupil into the AC
the aqueous fluid drains through the AC angle via one of 2 drainage pathways – what are they?
- the ill-defined uveoscleral outflow pathway
2. the well-defined trabecular outflow pathway:
the aqueous fluid drains through the AC angle via one of 2 drainage pathways – what are they?
- the ill-defined uveoscleral outflow pathway
2. the well-defined trabecular outflow pathway:
the ill-defined uveoscleral outflow pathway
Fluid exit through uveal meshwork –
ciliary muscle bundles – suprachoroidal spaces –absorbed into sclera or anterior ciliary veins or vortex veins
